"Whose Art Is It?" is the story of sculptor John Ahearn, a white artist in a black and Hispanic neighborhood of the South Bronx, and of the people he cast for a series of public sculptures commissioned for an intersection outside a police station. Jane Kramer, telling this story, raises one of the most urgent questions of our time: How do we live in a society we share with people who are, often by their own definitions, "different?" Ahearn's subjects were "not the best of the neighborhood." They were a junkie, a hustler, and a street kid. Their images sparked a controversy throughout the...